The diagram shows two cells from the lining of the trachea. Why cell P contains many of the structures labelled as T.

In the given figure of the cells in the lining of the trachea, the cells labelled as R cells are called the goblet cells and the cells labelled as P cells are the cilia cells that beat the cilia and remove the mucus from the respiratory tract. The structures labelled as S, T, U and W are: S -Cilia T- Mitochondria U- Golgi body W- Nucleus Mitochondria are abundant in the cilia cell of the trachea because it produces the energy in form of ATP, which is required for the ciliary beating. These cells push back the mucus towards the throat and prevent its entry into the lungs.

The diagram shows two cells from the lining of the trachea. Explain the role of structure U in cell R.

In the given figure of the cells in the lining of the trachea, the cells labelled as R cells are called the goblet cells and the cells labelled as P cells are the cilia cells that beat the cilia and remove the mucus from the respiratory tract. The structures labelled as S, T, U and W are: S -Cilia T- Mitochondria U- Golgi body W- Nucleus In the goblet cells, there are abundant Golgi bodies. The main function of the Golgi body is to sort, modify and do the packaging of macromolecules that are secreted by the cells. The goblet cells secrete mucus that traps the dust particles, bacteria, pathogen etc.,

The diagram shows two cells from the lining of the trachea. The magnification is diagram is × 750. Write the formula that you will use to calculate the actual length of cell P.

In the given Image the cell P is the ciliated cell and Cell R is th e goblet c ell of the lining of the trachea. The length of cell P on page is 80mm. The magnification is 750 times. Thus, the length of the cell will be = T h e l e n g t h o f c e l l o n p a g e M a g n i f i c a t i o n o f t h e c e l l

The diagram shows two cells from the lining of the trachea. The magnification is a diagram is × 750. Use a formula to calculate the actual length of cell P.

In the given Image the cell P is the ciliated cell and Cell R is the goblet cell of the lining of the trachea. The length of cell P on page is 80mm. The magnification is 750 times. Thus, the length of cell will be = 80 ÷ 750 = 0.107 mm

The diagram shows two cells from the lining of the trachea. The magnification is a diagram is × 750. Use a formula to calculate the actual length of cell P. Give your answer to the nearest micrometre.

In the given Image the cell P is the ciliated cell and Cell R is the goblet cell of the lining of the trachea. The length of cell P on page is 80mm. The magnification is 750 times. Thus, the length of cell will be = 80 ÷ 750 = 0.107 mm= 107μm

The diagram shows two cells from the lining of the trachea. Describe the role of cell P and Cell R in the gas exchange system.

In the given figure, the cells showing the cup-shaped depression are the goblet cells (labelled as R cells). The role of these cells in the respiratory tract is to secrete mucus that traps the foreign particles like dust, bacteria, viruses, pollen, etc., and prevent their entry into the alveoli or the gas exchange surface The cells labelled as P cells are the ciliated cells that beat back and forth to move the mucus towards the throat. These cells thus remove the mucus from the respiratory tract.

HARD

AS and A Level

IMPORTANT

Earn 100

The diagram shows two cells from the lining of the trachea.

Name the structures S, T, U and W.

Important Questions on Gas Exchange

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

Why cell P contains many of the structures labelled as T.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

Explain the role of structure U in cell R.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

The magnification is diagram is $\times$ 750.

Write the formula that you will use to calculate the actual length of cell P.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

The magnification is a diagram is $\times$ 750.

Use a formula to calculate the actual length of cell P.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

The magnification is a diagram is $\times$ 750.

Use a formula to calculate the actual length of cell P. Give your answer to the nearest micrometre.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 6

The diagram shows two cells from the lining of the trachea.

Question Image

Describe the role of cell P and Cell R in the gas exchange system.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 7

Copy and complete the table to compare the trachea with a respiratory bronchiole. Use a tick (v) to indicate that the structure is present and a cross (x) to indicate that it is not.

HARD

AS and A Level

IMPORTANT

Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 9 - Gas Exchange>EXAM-STYLE QUESTIONS>Q 7

Describe how the alveoli are protected against infection.

The diagram shows two cells from the lining of the trachea. Name the structures S, T, U and W.

Important Questions on Gas Exchange

Learn and Prepare for any exam you want !

The diagram shows two cells from the lining of the trachea.

Name the structures S, T, U and W.